10 Best Diy Mini Splits 2026 in the United States

The Senville LETO Series Mini Split is a powerful 2.5-ton (30,000 BTU) unit that can cool and heat spaces up to around 1,400 square feet, making it suitable for larger rooms or small businesses. Its 19 SEER rating means it’s quite energy efficient, helping you save on electricity bills while providing reliable comfort. The system supports smart features, including Alexa voice control, which lets you adjust temperature easily from your phone or with voice commands—great for convenience. Noise levels are low at 34 decibels, so it won’t be disruptive in quiet settings like bedrooms or offices.

While it includes a full installation kit, the system requires professional setup, which might discourage those hoping for a true DIY project. It runs on 220 volts, so you’ll need the proper electrical setup. The unit works year-round with functions for cooling, heating (down to 5°F), dehumidifying, and fan mode, making it a versatile choice in various climates. A 5-year warranty on parts and compressor adds peace of mind. However, labor for installation isn’t covered, and the included line set is limited to 25 feet of refrigerant pre-charge, which could be a factor depending on your installation layout.

The Senville LETO is a strong, efficient, and smart mini-split option for those ready to invest in professional installation and want reliable comfort with modern controls.

The MRCOOL 12000 BTU Easy Pro Series mini split is a solid choice for anyone looking to install a ductless heating and cooling system themselves. With 12,000 BTUs, it can efficiently cover spaces up to about 550 square feet, making it suitable for small homes, offices, or commercial areas. Its combo heating and cooling feature means you get year-round comfort from one unit. Installation is designed with DIY users in mind, which is a big plus if you want to avoid professional installation costs. Operating at 115 volts, it fits standard electrical setups, simplifying the hookup. The system runs quietly at 43 decibels, so it won’t be distracting in daily life.

It also includes helpful smart features like a timer and refrigerant leakage detection, which add convenience and safety. The Active Clean Technology helps keep the air fresh with easy-to-clean filters, supporting better indoor air quality. On the downside, its energy efficiency is moderate with a 2-star BEE rating, which means it might not be the most cost-effective option in the long run compared to higher-rated models. Additionally, this is a single-zone system, so it’s best if you only need to control one room or area.

In summary, this MRCOOL mini split is a user-friendly, reasonably quiet, and versatile system that works well for smaller spaces and DIY installation, but energy efficiency and zoning needs should be considered when making your choice.

The Senville LETO Series Mini Split is a quiet and energy-efficient unit with a cooling capacity of about 10,300 BTUs, suitable for spaces around 400 square feet. It stands out with a strong SEER rating of 19 (measuring energy efficiency), and smart Alexa integration for easy voice or app control—great if you like modern convenience. It offers heating and cooling through an inverter heat pump system that works down to very cold temperatures (-15°C), making it useful year-round.

Noise levels are low at about 25 dB, so it won’t disturb your peace. This model is designed for professional installation and is not DIY-friendly, which might add to your upfront cost and complexity if you were hoping to install it yourself. It uses standard 110V power, which fits most home electrical setups.

The package comes complete with indoor and outdoor units plus all necessary installation materials, and the manufacturer backs it with a solid 5-year warranty on the compressor. This mini split fits well for those seeking a stylish, reliable heating and cooling solution with smart home features, but if you want an easy DIY setup, this might not be the best choice.